Title:
【発明の名称】多電極アブレーション装置
Document Type and Number:
Japanese Patent JP3009735
Kind Code:
B2
Abstract:
A tissue ablation apparatus includes a delivery catheter with distal and proximal ends. A handle is attached to the proximal end of the delivery catheter. At least partially positioned in the delivery catheter is an electrode deployment device. The electrode deployment device includes a plurality of retractable electrodes. Each electrode has a non-deployed state when it is positioned in the delivery catheter. Additionally, each electrode has a distended deployed state when it is advanced out of the delivery catheter distal end. The deployed electrodes define an ablation volume. Each deployed electrode has a first section with a first radius of curvature. The first section is located near the distal end of the delivery catheter. A second section of the deployed electrode extends beyond the first section, and has a second radius of curvature, or a substantially linear geometry.
Inventors:
Edwards Stuart Dee
Lux Ronald G
Sherkey Hugh
Lux Ronald G
Sherkey Hugh
Application Number:
JP50752996A
Publication Date:
February 14, 2000
Filing Date:
August 11, 1995
Export Citation:
Assignee:
Rita Medical Systems, Inc.
International Classes:
A61B18/12; A61B18/14; A61B18/18; A61N1/40; A61N5/02; A61N5/04; C22C1/04; C22C14/00; C22F1/18; A61B17/00; A61B18/00; A61B18/22; A61M1/00; A61M3/02; A61M25/00; (IPC1-7): A61B18/12
Domestic Patent References:
| JP2121675A | ||||
| JP63174668A | ||||
| JP7503645A |
Attorney, Agent or Firm:
Minoru Nakamura (7 outside)